/* Ahmad A. Idris personal site
   Design system: editorial ink and paper with clay and forest accents.
   Edit tokens below to retheme. */

:root {
  --ink: #16233B;
  --ink-2: #0F1930;
  --paper: #FAF6EE;
  --paper-2: #F3ECDC;
  --text: #22304A;
  --muted: #525E74;
  --green: #2F5D42;
  --clay: #8C4718;
  --clay-soft: #B0713A;
  --bronze: #B08640;
  --gold: #E4C27E;
  --paper-on-ink: #F5EFE3;
  --line: #E4DAC6;
  --focus: #8C4718;
  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --maxw: 68rem;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.1rem, 5.2vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2.4vw, 1.45rem); }

p { margin: 0 0 1.1em; }

a {
  color: var(--clay);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 140ms ease;
}
a:hover { color: var(--green); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

img, svg { max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper-on-ink);
  padding: 0.7rem 1.1rem;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus {
  left: 0;
  color: var(--paper-on-ink);
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.brand {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.brand:hover { color: var(--clay); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}

.site-nav ul {
  display: flex;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a {
  text-decoration: none;
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 500;
  padding: 0.5rem 0.15rem;
  display: inline-block;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--clay); border-bottom-color: var(--clay-soft); }
.site-nav a[aria-current="page"] {
  color: var(--green);
  border-bottom-color: var(--green);
}

@media (max-width: 800px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav { display: none; width: 100%; }
  .site-nav.open { display: block; }
  .site-header .wrap { flex-wrap: wrap; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 0.5rem 0 0.75rem; }
  .site-nav a { display: block; padding: 0.7rem 0.25rem; font-size: 1.05rem; border-bottom: none; }
  .site-nav a[aria-current="page"] { border-left: 3px solid var(--green); padding-left: 0.6rem; }
}

.no-js .nav-toggle { display: none; }
@media (max-width: 800px) {
  .no-js .site-nav { display: block; }
}

/* Hero */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--paper-on-ink);
  overflow: hidden;
}
.hero .wrap {
  position: relative;
  padding-top: clamp(3.5rem, 9vw, 6.5rem);
  padding-bottom: clamp(3.5rem, 9vw, 6.5rem);
  max-width: 56rem;
}
.hero h1 {
  color: var(--paper-on-ink);
  margin-bottom: 0.5em;
}
.hero .lede {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  max-width: 44rem;
  color: #D9D3C4;
}
.hero-path {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.5;
}
.kicker {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
  font-weight: 600;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
  min-height: 44px;
}
.btn-primary {
  background: var(--gold);
  color: #241703;
  border: 2px solid var(--gold);
}
.btn-primary:hover { background: #EFD49B; border-color: #EFD49B; color: #241703; }
.btn-secondary {
  background: transparent;
  color: var(--paper-on-ink);
  border: 2px solid #58657F;
}
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }

.btn-solid {
  background: var(--green);
  color: #FBF8F1;
  border: 2px solid var(--green);
}
.btn-solid:hover { background: #24492F; border-color: #24492F; color: #FBF8F1; }
.btn-outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}
.btn-outline:hover { background: var(--green); color: #FBF8F1; }

/* Sections */
.section { padding: clamp(3rem, 7vw, 5rem) 0; }
.section-alt { background: var(--paper-2); }
.section-ink { background: var(--ink); color: var(--paper-on-ink); }
.section-ink h2, .section-ink h3 { color: var(--paper-on-ink); }
.section-ink p { color: #D9D3C4; }
.section-ink a { color: var(--gold); }
.section-ink a:hover { color: #F1DCA9; }

.eyebrow {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--clay);
  font-weight: 600;
  margin-bottom: 0.8rem;
}
.section-ink .eyebrow { color: var(--gold); }

.lead {
  font-size: 1.15rem;
  max-width: 46rem;
}

/* Credibility strip */
.cred {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}
.cred ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 2rem;
  justify-content: center;
  font-size: 0.92rem;
  color: var(--muted);
}
.cred li { display: flex; align-items: center; gap: 0.5rem; }
.cred li::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--bronze);
  border-radius: 1px;
  transform: rotate(45deg);
  flex: none;
}

/* Cards grid */
.grid {
  display: grid;
  gap: 1.4rem;
  margin-top: 2rem;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
@media (min-width: 900px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); }

.card {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-top: 4px solid var(--bronze);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem 1.3rem;
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(22, 35, 59, 0.08);
}
.card h3 { margin-bottom: 0.4em; }
.card p { font-size: 0.98rem; color: var(--muted); margin-bottom: 0.8em; }
.card .card-link {
  font-weight: 600;
  font-size: 0.95rem;
}
.card-green { border-top-color: var(--green); }
.card-clay { border-top-color: var(--clay-soft); }
.card-ink { border-top-color: var(--ink); }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
  gap: 1.2rem;
  margin-top: 2rem;
}
.stat {
  border-left: 3px solid var(--bronze);
  padding-left: 1.1rem;
}
.stat .num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  display: block;
  line-height: 1.1;
}
.section-ink .stat .num { color: var(--gold); }
.stat .label {
  font-size: 0.92rem;
  color: var(--muted);
}
.section-ink .stat .label { color: #C9C2B0; }
.stat-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 1.2rem;
}
.section-ink .stat-note { color: #A8A190; }

/* Divider motif: Northern Nigerian geometric interlace, kept subtle */
.motif {
  display: block;
  width: 100%;
  height: 14px;
  margin: 0;
  color: var(--bronze);
  opacity: 0.55;
}

/* Journey timeline */
.journey {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.journey li {
  position: relative;
  padding: 0 0 1.6rem 2rem;
  border-left: 2px solid var(--line);
  margin-left: 0.5rem;
}
.journey li:last-child { padding-bottom: 0.2rem; }
.journey li::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 0.35rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--green);
}
.journey .when {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clay);
  font-weight: 600;
  display: block;
  margin-bottom: 0.2rem;
}
.journey h3 { margin-bottom: 0.25em; }
.journey p { margin-bottom: 0; color: var(--muted); max-width: 40rem; }

/* Prose pages */
.prose { max-width: 46rem; }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.2em; }
.prose li { margin-bottom: 0.45em; }
.prose blockquote {
  margin: 1.6em 0;
  padding: 0.4em 0 0.4em 1.3em;
  border-left: 3px solid var(--bronze);
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
}

.page-hero {
  background: var(--ink);
  color: var(--paper-on-ink);
  position: relative;
  overflow: hidden;
}
.page-hero .wrap {
  padding-top: clamp(2.6rem, 6vw, 4.2rem);
  padding-bottom: clamp(2.6rem, 6vw, 4.2rem);
}
.page-hero h1 { color: var(--paper-on-ink); margin-bottom: 0.3em; }
.page-hero p { color: #D9D3C4; max-width: 44rem; margin-bottom: 0; font-size: 1.1rem; }

/* Case study */
.cs-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 1.2rem;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.95rem;
}
.cs-meta dt {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clay);
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.cs-meta dd { margin: 0; color: var(--text); }

.fact-box {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  margin: 1.6em 0;
  font-size: 0.98rem;
}
.fact-box strong { color: var(--ink); }

/* Pills */
.pills {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.pills li {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-size: 0.92rem;
  color: var(--text);
}

/* Forms */
.form-grid { display: grid; gap: 1.1rem; max-width: 38rem; }
label { font-weight: 600; font-size: 0.95rem; color: var(--ink); display: block; margin-bottom: 0.35rem; }
input, textarea, select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  font: inherit;
  color: var(--text);
  background: #FFFDF8;
  border: 1px solid #C9BFA8;
  border-radius: 8px;
}
input:focus, textarea:focus, select:focus {
  outline: 3px solid var(--focus);
  outline-offset: 1px;
  border-color: var(--clay);
}
.hint { font-size: 0.85rem; color: var(--muted); margin-top: 0.3rem; }
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

/* Footer */
.site-footer {
  background: var(--ink-2);
  color: #C9C2B0;
  padding: 3rem 0 2rem;
  font-size: 0.95rem;
}
.site-footer a { color: var(--gold); }
.site-footer a:hover { color: #F1DCA9; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
.site-footer .brand { color: var(--paper-on-ink); font-size: 1.15rem; }
.site-footer ul { list-style: none; margin: 0.6rem 0 0; padding: 0; }
.site-footer li { margin-bottom: 0.45rem; }
.site-footer .fine {
  border-top: 1px solid #2A3852;
  padding-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #9891A3;
}

.center { text-align: center; }
.mt-0 { margin-top: 0; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .card:hover { transform: none; }
}

@media print {
  .site-header, .site-footer, .cta-row { display: none; }
  body { background: #fff; color: #000; }
}